Fuse plug



May 1, 1928. 1,868,138

L. BAENZIGER FUSE PLUG Filed Feb. 23, 1927 /N VENTO@ Patented May 1, 192-8. i y p UNITED STATES PATENT OFFICE.

LEONARD BAENZIGER, F ABINGTON. MASSACHUSETTS, ASSIGNOR TO ACME ELECTRIC MANUFACTURING COMPANY, 0F CHELSEA, MASSACHUSETTS, A CORPORATION Ol' IASSACHUSETTS.

FUSE PLUG'. 'A

Application tiled February 28, 1927. Serial No. 170,089.

ThisI invention relates to fuse plugs. rial fits snugly between the extension 14 and The object of my invention is the producthe sides of the top member 11. tion of a fuse plug that will not break or The fusing member 17 is connected at the shatter when it-blows` out. Vbottom in the usual manner, forming the This invention is an improvementon my loop 18, and follows along the insulating ma- 45 invention, an application for which was tiled terial 16, into and through the opening l2 January 2.1926, Serial No. 78.988, in which and along the recess 19 in the side of the the construction of the fuse was described. glass top, where it is connected with the This invention relates to a method of conbrass thread and glass in the usual manner.

struction by which the hot gas produced From this construction it will be seen that 50 p when a fuse blows out. will be prevented the presence of cylinder 16 prevents the fusfrom coming in contact with the walls of ing member from coming in Contact with the the glass. preventing the breaking or shatside of the glass. Also the hot gases will tering of the glass. be prevented from coming in contact with l5 The invention will be hereinafter considthe sides of the glass, and shattering of the 55 ered in detail and-specifically claimed. Refglass will thereby be eliminated. erence will now be had to the drawing form- Having described my invention, what I ing a part of this application, wherein there claim is: is illustrated a preferred embodiment of my 1. A fuse plug comprising a hollow glass 20 invention, but 1t is understood that the elebody closed at one end, a fuse therein visin0 ments thereof can be varied or changed as ble through said closed end, and means to for shape, size, or form without departing prevent hot gases from coming in contact from the spirit of the invention. with the side walls of said glass body coin- Fig. 1 is a vertical section through the cenprising a removable sleeve of non-conducttre of the fuse. ing material positioned within said glass 55 Fig. 2 is a view of the t'use with the-copbody in contiguous relation with the side per shell, broken away to show a certain part walls thereof and spaced from the major of its construction. portion of the fuse.

1() designates a fuse having a top member 2. A fuse plug comprising a hollow trans- 11 made of a colorless, transparent material parent body, a fuse therein, an insulation 70 such as glass. The bottom of the glass top plug closing the bottom of said body and has a rectangular indenture 12.A The bottom having a projection extending therein, and part 12 is made ot' porcelain with a shoulmeans to prevent hot gases from coming in der 13 and a round extension 14 which tits contact with the walls of said body comprisinto the inside of the glass top. The shoul ing a sleeve of non-conducting material po- 7l der 13 carries an extension 15 which tits into sitioned within said body between the walls the opening 12. A brass screw thread tits thereof and the periphery of the projection around the threads on the outside `of the of said plug in contiguous relation with the glass top 11. A cylinder 16 made of nonwalls of said body.

conducting and preferable insulating mate- LEONARD BAENZIGER. 

